Surface treating machine



Aug. 13, 1940. H. A. FALLON SURFACE TREATING MACHINE Filed Sept. 13, 1937 mirvlqlwlwwvtnqau m M W w A Patented Aug. 13, 1940 UNITED STATES PATENT OFFICE SURFACE TREATING MACHINE.

a corporation Application September 13, 1937, Serial No. 163,605

2 Claims.

formed body as to create air currents that are directed toward a receiving receptacle formed within the body and wherein entrained particles will be removed from the currents of air and caused to settle out by gravity during the operation of the machine.

20 Another important object of the instant invention is the provision in a surface treating machine of a drum for carrying a strip of steel wool, one end of which is clamped to the drum so that as the strip of steel wool is worn away,

25 the same will be prevented from sliding around the drum and thereby lowering the .efiiciency of the machine having the drum associated there: with.

A still further object of the invention is the provision of a surface treating machine having an abrasive-carrying drum, in which machine is formed passage-ways through which air currents created by the said drum, may pass for the purpose of rendering the surface being cleaned, free from particles ground therefrom by the said drum.

Other objects of the invention will appear during the course of the following specification referring to the accompanying drawing, wherein:

Figure 1 is a side elevation of a surface treating machine made to embody the features of this invention.

Fig. 2 is a vertical, longitudinal, central section through the said machine.

Fig. 3 is a vertical, cross-sectional view through the same taken on line IIIIII of Fig. 2.

Fig. 4 is a fragmentary, sectional view through a portion of the machine taken on line IV-IV of Fig. 2, and

Fig. 5 is a fragmentary, detailed, sectional view taken on line VV of Fig. 1.

The surface treating machine embodying this invention preferably comprises a body having a top 8, sides I0, ends I2 and a bottom I4, all of which are combined to create a box-like body provided with an opening I6 through the bottom I4 thereof adjacent to the forward end of the body. A cylindrical drum I8 is mounted upon shaft which in turn is journalled in bearings 22 carried by the opposite sides II] of the body. 5 These sides carry shaft 20 so that it may be rotated through the medium of pulley 24 which is mounted thereon exteriorly of the body.

A motor 26 carried on top of the body is in operable connection with drum I8 through the 1 medium of pulley 24 and belt 28. This belt may be adjusted as to tension through theuse of slotted brackets 38 of conventional character.

A handle 32 secured to the body extends to a point within easy reach of the operator and wires 15 34 carry current to motor 26. The rear portion of the body is supported by rollers 36 mounted within a small separate chamber 38 divided from the rest of the body by a partition 48. There is one of these rollers 36 adjacent each side at the 20 rear of the machine and the forward part of the machine rests directly upon the surface being treated through the medium of drum I8. Thus a suificient amount of Weight is present to cause the abrasive material on drum I8 to function.

The abrasive material on drum I8 is in the form of a ribbon of steel wool 42. This ribbon is substantially the same width as drum I8 and is wound around the outer annular face of the drum I8 in successive layers, the winding being in a clock-wise direction so that as drum I8 is rotated in the direction of the arrow (Fig. 2), the free end will be held against the remaining portion of the steel wool. One end of the ribbon of the steel wool is held in place by a specially formed clamp which comprises a 1ongitudinal slot 44 and a bar 46. Slot 44 is formed through the wall of drum I8 and bar 46 is within the hollow drum adjacent to said slot. Machine screws or the like 48, extend through small openings in the side of drum I8 and into screwthreaded engagement with each end of bar 46, thus when the ribbon of steel wool is between bar 46 and the inner face of drum l8, these ma chine screws may be tightened and thus clamp the end of the ribbon of steel wool 42 in place.

A partition 58 is formed within the housing substantially parallel to and in spaced relation with a portion of the top 8 and end I2. This partition 58 extends from side to side and creates a passage-way 52 through which air currents are forced in the direction of the arrows shown in Fig. 2 for the purpose of keeping the surface being treated free from foreign particles. The rotation of drum I8 is sufiicient to set up the 55 currents just mentioned and a portion of the body rearwardly of drum l8 and above bottom I serves as a receptacle to catch the particles which are carried thereinto by the said currents of air.

In the commercial use of a machine made exactly as illustrated, all particles which it is desirable to collect are retained within the body rearwardly of drum I8 and may be removed therefrom through a door 5 3 provided in the rear end l2. The forward end I2 is removably associated with the rest of the body and carries that portion of partition which is in parallel spaced relation thereto.

Thumb-screws 56 are employed to hold this removable end l2 in place and inclined slots 58 formed in opposed sides ill receive pins 60 carried by end 12. A rubber strip 62 mounted upon forward end l2 engages the surface being treated and seals to a certain extent the forward portion of the machine so that air currents travelling through passage-way 52 will be directed upwardly from the said surface between drum [8 and strip 62 to carry foreign particles from that portion of the surface being treated. The removal of this forward end I2 will permit adjusting the screws and adjusting the drum and supplying the same with additional abrasive when desired.

It is conceivable that this invention might be embodied in machines having different characteristics than that shown in the accompanying drawing and it is desired to be limited only by the scope of the appended claims.

Having thus described the invention, what I claim as new and desire to be secured by Letters Patent is:

1. A surface treating machine of the kind described comprising a hollow body having a top, a pair of sides, a pair of ends, and a bottom provided with an opening adjacent to one of the ends and extending from side to side of the body; a cylindrical abrading drum rotatably mounted within the body, between its sides, with a portion thereof extending through said opening below the bottom for supporting one end of the body as the surface is being acted upon thereby; a motor having oerable connection with the drum for rotating the same; and a partition within the body,

extending in spaced concentric relation with the said one end and along a portion of the top toward the other end of the body and terminating above the drum between the drum and other end of the body to form a passageway between the partition and the top and one end of the body, said one end of the hollow body having a resilient strip carried thereby and extending from side to side of the body to close the space between the lower edge of thesaid one end and the surface being treated, said body having rollers thereon for supporting the other end thereof, said drum having a continuous annular periphery in tangential contact with the surface being treated on a line spaced rearwardly from the resilient strip whereby material is directed into the body through the said passageway.

2. A surface treating machine of the kind described comprising a hollow box-like body having a top, a pair of sides, a pair of ends, and a bottom normally parallel to the surface being treated, said bottom being provided with an opening adjacent to one of the ends whereby a refuse receiving cavity is formed at one end of the boxlike body; a surface treating drum rotatably mounted within the body, between its sides with a portion thereof extending through said opening and below the bottom into contact with the surface being treated; a motor having operable connection with the drum for rotating the same; a resilient strip carried by said one end of the body to engage the surface being treated; and a partition within the body, extending in spaced relation with the said one end and along a portion of the top toward the other end of the body and terminating above the bottom of the body and between the other end thereof and said drum whereby to form a passageway extending partially around said drum and in communication with the receiving cavity, said drum being positioned between the said receiving cavity and the said one end of the body, said passageway and drum being substantially the width of the body, said drum serving as the sole means for setting up currents of air rearwardly through the passageway and into the refuse receiving cavity as the machine is in operation.

HENRY A. FALLON. 

